( - 1,5x - 15 ) x \(\frac{2}{3}=\frac{-2}{5}\)
\(\Rightarrow\left(-1,5x-15\right)=\frac{-2}{5}:\frac{2}{3}\)
\(\Rightarrow\left(-1,5x-15\right)=\frac{-3}{5}\)
\(\Rightarrow-1,5x=\frac{-3}{5}+15\)
\(\Rightarrow-1,5x=14,4\)
\(\Rightarrow x=14,4:\left(-1,5\right)=\frac{-48}{5}=-9,6\)
LIKE nha!